--description--

In previous lessons, you learned how to work with higher order functions like map, filter and reduce.

In this workshop, you will build a library manager app that will give you an opportunity to practice working with different higher order functions.

To get started, create a variable called library and assign it an empty array.

--hints--

You should create a library array.

assert.isArray(library)

Your library array should be empty.

assert.isEmpty(library)

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